Jar closure



NOV. 5, 1935- I SIEVERUNG I 2,020,217

JAR CLOSURE Original Filed Aug. 50, 1933 2 Sheets-Sheet l Inventor H6217awed] Nov. 5, 1935. SIEVERLING. 2,020,217

JAR CLOSURE Original Filed Aug. 30, 1933 2 Sheets-Sheet 2 Inventor 07fib e Patented Nov. 5, 1935 UNITED STATES PATENT OFFICE ApplicationAugust 30, 1933, Serial No. 687,506 Renewed April 5, 1935 1 Claim. (01.215-92) This invention appertains to new and useful improvements inreceptacle closures, and more particularly to a novel closure and sealfor jars, particularly of the fruit type.

The principal object of the present invention is to provide a closurefor jars wherein clamp means of simple construction is employed foreffecting a tight application of the jar top to insure as near perfect aseal as possible.

During the course of the following specification, other importantobjects and advantages of the invention will become apparent to thereader.

In the drawings:

Figure 1 represents a side elevational view of a jar equipped with-thenovel closure.

Figure 2 represents a fragmentary side elevational view of a jarequipped with the novel closure, taken from a point approximately 90spaced from the position from which Figure 1 is viewed.

Figure 3 represents a top plan view of the novel closure on a jar.

Figure 4 represents a top plan View of the cap.

Figure 5 represents a fragmentary vertical sectional view takensubstantially on line 55 of Figure 1.

Figure 6 represents a perspective view of the clamp.

Figure 7 represents a plan view of the stamp ing from which the clamp isformed.

Figure 8 represents a pattern of the cam shoulder on the jar neck.

Figure 9 represents a sectional view fragmentarily showing the clampwith an opening instead of the depression.

Referring to the drawings wherein like numerals designate like parts, itcan be seen in Figure 1 that numeral 5 represents the jar proper, whilenumeral 6 represents the neck portion which is provided with theoutstanding circumferentially extending shoulder I provided on itsbottom side with cam surfaces 8.

Numeral 9 represents the cap which is provided with a dependingcircumferentially extending apron II] which snugly fits the upperportion of the neck 6 and rests upon the packing ring H, which ring ispositioned upon the shoulder I, it being understood that when the apronI is resting upon the packing ring ll, there exists a space between theupper end of the neck 6 and the bottom of the cap 9. The neck 6 ispreferably slightly tapered upwardly and the interior of the apron Illis correspondingly shaped so that a more or less wedging action of theapron with the neck will be obtained.

The clamp is generally referred to by numeral I2 and consists of anelongated strip l3 of metal provided with an enlarged central portiondenoted by numeral I4 which, as shown in Figure 9, can be provided witha circular opening I5, or as shown in Figure 6, may be provided with araised portion I 6 resulting from an indentation impressed from thebottom side of the strip.

The end portions of the strip I3 are bent downwardly to provide legportions I! and these leg'lO portions are bent inwardly at their lowerends to provide foot portions I8. As is clearly shown in Figure 5, theleg portions extend downwardly along the sides of the apron l0 and theshoulder I, while the foot portions l6 engage under the shoulder andagainst the cam surfaces 8. Finger engaging lugs l9--l9 are provided onthe leg portions ll, the lugs being located on alternate edge portionsof the legs, as in the manner substantially shown in Figure '7, which isa pattern view of the clamp stamping.

Obviously, in order to place the clamp l2 properly upon the cap 9, thesame is slid over the cap until the boss 20 is properly seated in thepocket H5 or in the recess of the form shown in Figure 9 and denoted bynumeral l5. While the clamp is thus being positioned on the boss 26, thefoot portions 18 are engaging under the shoulder l and obviously, byengaging the fingers against the lugs l9 and effecting a rotary motionof the clamp on the cap, the foot portions I8 will ride the cam surfaces8 and cause a drawing down motion of the clamp, which obviously bindsthe cap 9 to the neck 6 with its apron against the packing H, producinga hermetical seal.

While the foregoing specification sets forth the invention in specificterms, it is to be understood that numerous changes in the shape, sizeand materials may be resorted to without departing from 40 the spiritand scope of the invention as claimed hereinafter.

Having described the invention, what is claimed as new is:-

A closure clamp for jars having cam shoulders on the necks thereof,comprising a U-shaped member provided with inturned extremities on theleg portions thereof, said member being stamped from sheet metal toprovide a lateral extension on one vertical edge of each leg, saidextensions being bent backwardly in oblique relation to the outside oftheir corresponding leg portions to provide finger engaging means.

HENRY SIEVERLING.

